Acrylic needle punched felt is one of the most common materials used to make filter bags, which has good hydrolytic stability.
Features
- The continuous working temperature is 130 degrees, and the moment does not exceed 140 degrees.
- Good acid and alkali resistance, PH value between 3-11.
- The relative humidity is less than 30%, pay attention to oxidation.
Description
Acrylic needle felt is a kind of fine fiber cloth using non-woven needle punching technology. The acrylic fibers are arranged in a staggered manner, the gaps are evenly distributed and large, the air permeability is good, and the chemical resistance is stable. It can not only filter normal temperature gas, but also filter medium temperature gas (150°C), it is an ideal choice for filtering acid, alkali and corrosive gases. Compared with polyester needle felt, the biggest feature of acrylic is that it has better hydrolysis resistance than polyester needle felt.
Physical Properties and Chemical Properties
| Weight | 300-600g/m2 ± 10% | |
| Diameter | No limited | |
| Finish treatment | Singeing, Calendering, Heat setting | |
| Air permeability | l / m2 / s @200pa | 200 ~ 350 |
| Tensile strength (N/5cm) | Warp | 800 |
| Weft | 850 | |
| Tensile elongation (%) | Warp | 20 |
| Weft | 25 | |
| Temperature (℃/℉) | ||
| Continuos temperature | C° | 120/248 |
| Instant temperature | C° | 140/284 |
| Anti-acid | Excellent | |
| Anti-alkali | Excellent | |
| Anti-abrasion | Good | |
| Hydrolysis stability | Excellent | |
Post-treatment:
For acrylic needle punched felt, we can treat it with different post-processing according to different working conditions. There are mainly the following post-processing treatments:
- Anti-Static (line type, cross line type, blend type)
- Waterproof and oilproof
- PTFE Membrane
Application
Filter bags made of acrylic needle punched felt are widely used in many industries:
- Cement Plant.
- Lime Stone.
- Asphalt Plant…
